Motor-driven farm implement.



No84 7,026. PATENTED MAR. 12, 1907,

- M. 0. SANDBERG.

MOTOR DRIVEN FARM IMPLEMENT.

APPLICATION FILED SEPT. 13, 1906.

3 SHEETS-SHEET llrwenfoz I arm No. 847,026. PATENTED MAR. 12 1907.

M. 0. SANDB-ERG.

MOTOR DRIVEN FARM IMPLEMENT.

APPLICATION FILED SEPT. 18, 1906.

3 SHEETS-SHEET 2.

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Witnmm No. 847,026. 7 PATENTED MAR. 12, 1907.

M. 0. SANDBERG..

MOTOR DRIVEN FARM IMPLEMENT.

APPLICATION FILED SEPT. 13, 1906,

s SHEETSSHEET s.

Svwentoz MELVIN SANDBERG, OF

MOTOR-DRIVEN FARM IMPLEMENT.

Specification of Letters Patent.

ATENT erron- QRANITE FALLS, MINNESOTA;

Patented March 12, 1907.

Application filed September 13, 1906. SerialNo. 334,518.

To 11// ll'imnt it may ran/warn.-

Be it known that I, MELVIN O. SANDBERG, a citizen of the Inited States, residing at Granite alls, in the county of Chippewa, State of Minnesota, have invented certain new and useful Improvements in Motor- Driven Farm Implements; and 1 do hereby" declare the following to be a full, clear, and

v gaged therein a yoke 28, carried by an angleexact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to cultivators, and l more particularly to self-propelled cultitators, and has for its object to provide a cult-i- I vator including a driving-motor and embody- 1 upon the shaft .22, and a spring 32 is arranged ing a novel arrangement of parts.

Another object is to provide a cultivator including means for varying the power of the motor to suit soils of different consistencies.

Other objects and. advantages will be apparent from-the following description, and it 1S to be understood that do not desire to be limited tothe exact details of construction shown-and described, for obvious modifications will occur to a person skilled in the art.

In the drawings forming a ortion of this specification, and'in which li re numerals of reference indicate similar parts in the several Views'Figure 1 is a side elevation of the pres cut invention. Fig. 2 is a top plan view. Fig. is arear elevation. Fig. 4'is a horizontal section through the powerechanging gear and the shafts. Fig 5 is an elevational view of the power-changing gear, showing the lever mechanism. Fig. (5 a longitudinal section.

. Referring now to the drawings, the present invention comprises a. frame 5, having 'a transverse stationary axle (5 at its torward end provided with stcering'knuckles 7 at its ends, which carry the front wheels 8. The forward portion of the frame is transversely reduced, as shown at 9, and has mounted therein a gasoleno-tank it), and rearwardly of the gasolenetank there is mounted transversely a. vertical motor 11 of the two-cycle type.

.ltearwardly of the engine there is mounted a gear-box 12:3, and extending out of the gear- I hex there is a shaft 14, connected, by means of a chain 15, with the differential 16 of a counter-shaft 17, the latter having sprockets 18 at its ends connected, by means of chains 19, with sprockets 20, carried by the rear wheel 21 of theimplement.

Within the gear-box there is journaled a longitudinally-extending shaft 22, connected,

by means of bevel-gear 23, with the shaft of the motor 11, and within the box this shaft has splined thereupon for movement longitudinally thereof a disk 24, having a plurality of concentric series of pins '25. projecting outwardly from its inner face 26. A grooved collar 27 is carried by the diskand has enlever 29, which is connected, by means of a cable 30, with a hand-lever 3i located within reach of'ir seat 32, mounted at thorearward-end of the frame 5, and the arrangement is such that operation of the hand-lever in one direction moves the disk 24 forwardly between the collar 27 and a fixed collar 33 upon the shaft 22 to hold the disk-yieldably against forward movement.

The portion of the shaft 14 which passes through the gearbox has splined thereupon a disk 34, which is thus movable Iongitudi nallymf the shaft 14 and which extends at right,angles to the disk 24, and this disk 34 liesvwith the disk :24 normally against its pe-- riphery and. has in its periphery a, series of sockets 35 for the receptlon of the pins-'25 of the dillerent series; Shifting mechanism is provided for the disk 34, consisting of a yoke.

36 and an angle 37 pivoted to the yoke for movement of the disk shaft 14 when the angle-lever is moved, and the. shifting mechanism also includes aflink 39, which is engaged in the horizontal arm 38 of the lever 37 and which, is pivoted to a second angle-lever 40 for vertical movement of the arm 38 when the angle-lever 40 is moved,

longitudinally of the and the latter is connected, by means of a rod. 4-], with a. hand-lever 412 for movement thereof. Both hand-levers are located within reach of the seat 32. It will thus be seen that when the power of the engine is to be increased it is but necessary to operate the hand-lever til to bring the disk 24 out of eng agement with the disk 34-, which disengages the pins from the sockets 35, and'th'e disk 34,

may then be moved, through .the inedium of the halal-lever 42 and connections, into'posl-jtion to receive the innermost series of pins 25- in its sockets, when the hand-lever 3.1 may be released to allow the spring 32 toreturn the disk 24 to normal position. A rack-and dog mechanism 43 is proyidedto hold vthe"level: 31, with the disk 24, in inoperativeposition,

and a similar mechanism L4 is. provided for- :1 the handl,ever 42 and is'arranged to hold the disk 34 atfdifl'erent points of its movement and in. position to receive the several series of pins in its sockets.

4o drive-wheels and counter-shaft, a seat at the rearward end .of the frame, and a steer1ng-' wheel. connected ,with-th steering mechanism and lying within reach of the seat.

ed to the yoke, a third angle-lever, connec-' trons between the secondand third angl'e-lebeing movable to receive the pins the different series in its sockets interchangeably,

the second-named disk, a yoke engaged in the groove ot the collar. an angle-lever pivot- Cultivator-arms 45 are pivoted to the means for moving the first-named disk 66 frame 5 for vertical movement and have deagainst the action of the spring,.means for pending stocks L6. which carry gronnd-treatmoving the second-named disk transversely ing devices 47, and levers 48 are provided for f of the first-named disk, drive-wheels for the movement of the frame into and out-of l frame, and connections between the second operative position and maybe reached from shaft and the drive-wheels for operation lo the seat 32. f thereof. 1

A, steering-gear 49 includes a shaft 50, havi 3. In amachine of the class described, the ing a wheel 51 within reach of the seat lifl. combination with aframe, ofamotor mount and includes also a worm-gear :32 and rods cd inthe frame,a shaft connected with the- 53, connected with a shaft which arrics the j motor for operation thereby, a disk splined 7o 15 worm and with a finger 54. extending inupon the shaft, a second disk extendingat \vardly from one of the stcoring-knnckles 7. right angles to the first-named disk and lying the two steering-kuucklcs havingineir linin position to receive the first-named disk" gcrs connected by a rod 56. aaainst its periphery when the first-named The shaft of thomotor 11 extends latcrdisk is at one limit of its movement, a shaft zd'ally beyond the frame, as shown at 11, and j extending at right angles tothe first-named carries a belt-wheel A, which may be us'cd in shaft and upon which the second named disk driving other machinery. 1 is splinod, a collar on the first-named shaft on What is claimed is the opposite side of the first-mulled disk from 1. In a machine of the class described, the the second-named disk, a spring arranged be z 5 combination. with a frame, of a motor in the tween. the first-named disk and collar, to frame, steering-wheels at'the forward end of hold the first-named disk against the second the frame, steering mechanism connected named disk, an angle lever connected with with the wheels, a gear-box in'the frame, the lirst named disk for movement thereof power-varying gear within the box, said gear I against the action of the spring, 'means for ;0 including asha'ft extending outwardly of the moving the angle-lever, means for holding box, transversely of the machine,connections the moving means with the first-named disk between the motor and, gear,'a counter-shaft ..out of engagement with the second-named journaled transversely of the machine, a difl disk, a plurality of concentric circular series ferential gear for thecounter-shaft, cornice-.5 of pins carried hythe first-named disk at its. 0 35 tions between the first-named shaft and the side adiace'nt to the second-named disk, said counter-shaft, drive-Wheels .for the frame, I second-named disk having pin-receiving sprockets carried by the drive --wheels, i sockets in its peripheryand being movable sprockets carried by the counter-shaft chain to'receive the pins of the different series inconnection between the sprocketsof the terchangcably, a grooved collar carried bygg vers for simultaneous movement thereof, a too )ivotcd hand-lever, -a rod pivoted to the' band-lever and to the thirdangle-lever for simultaneous movement thereof, and means forl'ioldiug the hand-lever with t-hedisk in .2. In a machine of the class described, the

4 5 combination with a frame, ofa motor mounted in the frame, a shaft connected with the motor for rotation thereby, a disk splincd upon' the shaft, a second shaft, adisk splincd upon the second shaft and extending at right 0 angles to the firstmamed disk and lying in position to receive the first-named. disk against its periphery, a spring arranged to hold the first-named disk yieldably 'in engagement with the-second-named disk, concentric cirl 55 cular series of pins c: rriediby the first-named disk, said second-named disk having periph- I In testimony whereof I atliX my signature in presence of two witnesses.

MELVIN O. SANDBERG. Witnesses:

II. P. I-Lwenn, B. M SANDBERGr position to receive pins of the different series. it 5 

